Home / 12,004.62-18,012.33-7,620.90

Finding the Fourth Proportional to 12,004.62, 18,012.33 and 7,620.90

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Solution

The fourth proportional to 12,004.62, 18,012.33 and 7,620.90 is: 11,434.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,004.62 : 18,012.33 = 7,620.90 : x
  2. Step 2: Convert to fraction form
    12,004.62/18,012.33 = 7,620.90/x
  3. Step 3: Cross multiply
    12,004.62x = 18,012.33 × 7,620.90
  4. Step 4: Simplify right side
    12,004.62x = 137,270,165.70
  5. Step 5: Solve for x
    x = 137,270,165.70/12,004.62
  6. Step 6: Final answer
    x = 11,434.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.